Mineoro 2-Box -- 492 feet range?

[kostas87]

Here you will find the device with the PD for the friend who is looking for it. If any technician or not finds among the errors, a differential amplifier or similar?

[FrancoItaly]

I'm sorry but I know very little about this topic.

[kostas87]

Don't worry Mr. Francoitaly. Just a friend was looking for this particular post, and I brought it up. The circuit is very simple but very clever. With hot spots tuned to detect buried metal fields. Alonso is a very clever man without a doubt.

[FrancoItaly]

No problem